In a statement released this afternoon, DCI Brian Kearney said: "First I would like to express my sincere condolences to Marie, Gerald Corrigan’s partner, Neale and Fiona, his two children, and the wider Corrigan family.

"This is truly devastating news and the thoughts of the entire investigation team are with the Corrigan family.

Gerald Corrigan was shot outside his home

"On April 19, 74-year-old Gerald Corrigan was shot and suffered truly horrific injuries. Since then, he has shown tremendous courage and determination whilst being treated at the Royal Stoke University Hospital.

"Sadly, early yesterday morning, Saturday, May 11, Gerald succumbed to his injuries and died with his family by his side.

"North Wales Police have now launched a murder investigation. However, we continue to keep an open mind in relation to the sequence of events that led to Gerald’s death.

"I am very grateful to the public for the response to previous press appeals. We have teams of officers following up the information you have kindly provided. North Wales Police continue to pursue a number of lines of enquiry.

"I would like now to issue a renewed appeal to anyone with any information whatsoever to come forward and speak to my investigation team in total confidence."

Anyone with information is asked to contact officers at Llangefni CID on 101 or via the police's live webchat, quoting reference number X052857.